Kirby's Star Stacker

The Friend Blocks and any Star Blocks in-between are then removed from play.

Similar to Tetris , sets of blocks fall into the playing field and combine any two of the following types: Star Blocks : The most important blocks, as all of the game modes rely on them.

Sandwich these blocks between two Friend Blocks either horizontally or vertically, and they will be cleared.

The more stars you clear, the higher the score.

Friend Blocks : These blocks have pictures of Kirby's friends - Rick the Hamster, Kine the Fish, and Coo the Owl (all from Kirby's Dream Land 2 ) - on them.

Match two of each to clear them from the screen.

Any Star Blocks between the two character blocks will also be cleared.

Bomb Blocks : Sandwich a Bomb Block in between two Friend Blocks, and the bomb will explode, removing all blocks in the same row.

Hard Blocks : You have to clear these blocks twice to clear them from the screen.

Clear them once to change them into ordinary Star Blocks, then they can be removed the normal way.

The game also features a "chain" system that rewards you for clearing blocks which in turn will clear other blocks.

If you clear two or more blocks in this manner, then you'll be rewarded with Kirby raining down that amount of Stars, which can fill in gaps and possibly complete another row, allowing the chain to go on even further.

Kirby's Star Stacker for Game Boy is currently worth €44.90 loose, €189.99 complete in box, and €436.57 factory sealed. Prices are based on real sales and update regularly on Gamevaro.

Kirby's Star Stacker has a steady sales history on the tracked marketplaces, meaning it trades hands regularly and isn't considered particularly rare.

Loose means cartridge or disc only, CIB (complete in box) includes the original box and manual, and sealed means factory-sealed and never opened. For Kirby's Star Stacker, loose is €44.90 and CIB is €189.99 — CIB commands a premium because original boxes and manuals are fragile and often don't survive.

The PAL version of Kirby's Star Stacker is currently worth €44.90 loose, versus €28.47 for NTSC-U. Regional price differences usually come down to print run size and regional collector demand.